And if that's true than Elune may actually be something above even the First Ones, as once again she's tied so heavily with three magic types (the "good" ones). Jailer is so far mostly death powered but he could always bust out void and fel powers as a twist. We already have him working with demons and specifically void-friendly(?) demons in the form of the Nathrezim, and his best buddy Denathrius is probably an ancient Dreadlord.